<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        div {
            margin-top: 20px;
            width: 200px;
            height: 200px;
            background-color: red;
            position: absolute;
            top: 100px;
            left: 10px;
            z-index: 1;
        }
        img {
            position: absolute;
            top: 100px;
            left: 10px;
        }
    </style>
</head>
<body>
    <button>动！！！</button>
    <div></div>
    <img src="image/mm.png" alt="" width="200px"/>

<script type="text/javascript">
	//需求:点击按钮,让合资和图片同时移开,并且,图片压住盒子/
	var btn = document.getElementsByTagName("button")[0];
	var div = document.getElementsByTagName("div")[0];
	var img = document.getElementsByTagName("img")[0];
	
	//绑定事件
	btn.onclick = function(){
		div.style.top = "300px";
		div.style.left = "300px";
		
		img.style.top = "300px";
		img.style.left = "300px";
		img.style.zIndex = "2";
	}
</script>

</body>
</html>